US20090100810A1 - Cyclonic separation apparatus - Google Patents

Cyclonic separation apparatus Download PDF

Info

Publication number
US20090100810A1
US20090100810A1 US12/255,785 US25578508A US2009100810A1 US 20090100810 A1 US20090100810 A1 US 20090100810A1 US 25578508 A US25578508 A US 25578508A US 2009100810 A1 US2009100810 A1 US 2009100810A1
Authority
US
United States
Prior art keywords
stage
separation
cyclone
stages
cyclonic separation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US12/255,785
Other versions
US7976597B2 (en
Inventor
David Benjamin Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoover Ltd
Original Assignee
Hoover Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoover Ltd filed Critical Hoover Ltd
Assigned to HOOVER LIMITED reassignment HOOVER LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH, DAVID BENJAMIN, MR.
Publication of US20090100810A1 publication Critical patent/US20090100810A1/en
Application granted granted Critical
Publication of US7976597B2 publication Critical patent/US7976597B2/en
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616—Multiple arrangement thereof
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616—Multiple arrangement thereof
    • A47L9/1625—Multiple arrangement thereof for series flow
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616—Multiple arrangement thereof
    • A47L9/1625—Multiple arrangement thereof for series flow
    • A47L9/1633—Concentric cyclones
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616—Multiple arrangement thereof
    • A47L9/1641—Multiple arrangement thereof for parallel flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24—Multiple arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24—Multiple arrangement thereof
    • B04C5/26—Multiple arrangement thereof for series flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24—Multiple arrangement thereof
    • B04C5/28—Multiple arrangement thereof for parallel flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C7/00—Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/03—Vacuum cleaner

Definitions

  • the present invention relates to cyclonic separation apparatus and particularly, but not exclusively, to cyclonic separation apparatus for use in vacuum cleaners.
  • High separation efficiency cyclonic separation is generally achieved by connecting several separation stages in series.
  • the successive stages are typically arranged in increasing efficiency in the direction of gas flow, although it is known to provide adjacent stages of similar efficiency.
  • GB2424603 discloses a three-stage separator comprising a low-efficiency cylindrical cyclone as the first stage, an annular array of parallel-connected high-efficiency cyclones located in a chamber above the first stage and a second similar array of high-efficiency cyclones as the third stage located in a chamber above the second stage.
  • the height of this arrangement renders it of limited use to vacuum cleaners, where compact dimensions are required.
  • the respective separation stages discharge their separated material into three separate collection chambers located below the respective cyclone outlets.
  • the collection chambers must be emptied individually, which can be a time consuming process since several parts are required to be removed from the separator unit.
  • GB2424606 discloses a multi-stage cyclonic separator for a vacuum cleaner whereby the high efficiency mini-cyclones of the second and third stages are arranged around the periphery of the of the low-efficiency first stage cyclone.
  • the peripheral arrangement of the higher-efficiency stages is restrictive of the number of cyclones possible in the individual stages, having regard to the dimensional limitations applicable to vacuum cleaners.
  • U.S. Pat. No. 2,372,514 discloses three vertically stacked separation stages, but incorporates a separated material collection arrangement whereby material falling from the cyclone outlets is collected in funnels and ducted to a single outlet at the base of the separation unit.
  • the second separation stage of this separator comprises an annular array of eight conical cyclones surrounding a central core tube, and the third stage comprises twenty-four small cyclones arranged in a cluster.
  • a cyclonic separation apparatus comprising a plurality of series-connected separation stages, each of the separation stages comprising a plurality of cyclone separators connected in parallel and disposed in a generally annular arrangement about a main axis of the apparatus with their respective longitudinal cyclone axes extending parallel to said main axis, whereby successive separation stages in the direction of fluid flow are disposed radially inwardly of each other with respect to said main axis of the apparatus.
  • the multi-stage, series connected cyclone separators of the apparatus provide a high separation efficiency, yet the annular arrangement of the stages makes the device compact and enables the apparatus to be utilised in a vacuum cleaner.
  • each cyclone separator comprises a first end having a first outlet for fluid from which particulate material has been separated, a second end having a second outlet for separated particulate material, and an inlet for particulate-laden fluid located adjacent said first end.
  • the first end of the cyclone separators in a said series-connected separation stage are longitudinally offset with respect to the first end of the cyclone separators in the separation stage disposed immediately upstream thereof, such that the first outlets of the cyclone separators of the upstream stage are substantially radially in line with the inlets of the cyclone separators of the adjoining downstream stage.
  • each stage is connected to respective collection chambers, preferably being annular in construction and preferably being concentrically-nested.
  • the collection chamber of the most upstream of said series-connected separation stages is surrounded by an annular separation chamber of a further cyclone separator connected upstream of the first of said series-connected separation stages.
  • said further cyclone separator comprises a first end having a first outlet for fluid from which particulate material has been separated, a second end having a region for collecting separated particulate material, and an inlet for particulate-laden fluid located adjacent said first end, said first outlet of said further cyclone separator being connected to the inlets the cyclone separators of the upstream stage by one or more axially extending ducts, which are preferably disposed immediately inside the outer wall of the separator unit.
  • the separator unit comprises a base having a hinged or otherwise openable closure which, when opened, permits separated particulate material to be emptied from each of said stages simultaneously.
  • the closure further permits separated particulate material to be emptied from the collection region at the second end of the further cyclone.
  • the most downstream separation stage comprises a cluster of parallel-connected cyclones.
  • FIG. 1 is a sectional view through an embodiment of cyclonic separation apparatus according to the present invention.
  • FIG. 2 is a schematic plan view through an alternative embodiment of cyclonic separation apparatus according to the present invention.
  • FIG. 1 of the drawings there is shown a cyclonic separation apparatus 1 according to the present invention for use in a vacuum cleaner.
  • the separation apparatus is mounted to a chassis (not shown) incorporating a handle, the lower end of the chassis being pivotally interconnected to a wheeled floor-cleaning head incorporating a rotatable agitator brush.
  • the separation apparatus 1 comprises a generally cylindrical upright housing, which houses upstream and downstream separation stages 2 , 3 at its lower and upper ends respectively.
  • the upstream stage 2 comprises a single low efficiency cyclone having a tubular side wall 4 defining a circular-section cyclone chamber 5 .
  • the lower end of the tubular side wall 4 is provided with a closure 6 , which can be opened to allow separated dirt and dust to be emptied from the apparatus 1 .
  • An inlet duct 7 for carrying dirt and dust laden air from the floor cleaning head extends tangentially through the upper end of the tubular side wall 4 of the upstream stage 2 .
  • An elongate tubular container 8 extends through the cyclone chamber 5 along the centre axis thereof. The lower end of the container 8 is sealingly closed by a seal 9 , which is mounted to the closure 6 such that the lower end of the container 8 is also opened when the closure 6 is opened.
  • the upper end of the upstream stage 2 is closed by an annular end wall 10 having a central aperture 11 , through which the tubular container 8 extends.
  • a perforated shroud 12 depends from the upper end wall into the cyclone chamber 13 , the lower end of the shroud being sealed against the external surface of the tubular container 8 .
  • the upper end of the container 8 extends into the downstream stage 3 about a transition section 13 whereby the container increases in diameter in moving from the upstream separation stage 2 to the downstream stage 3 .
  • the tubular container 8 defines an annular cavity or duct 14 which extends circumferentially of the apparatus 1 , with the upper end of the duct 14 defining the inlet 15 to the downstream separation stage 3 .
  • the downstream separation stage 3 comprises a first stage 50 having a plurality of parallel connected high efficiency cyclones 16 arranged in an annular configuration.
  • Each cyclone 16 of the first downstream stage 50 comprises a radially directed inlet 15 connected to the outlet of the upstream separation stage 2 via said annular cavity or duct 14 .
  • the cyclones 16 of the first downstream stage 50 each comprise a frustro-conical side wall 17 which extends downwardly from the inlet 15 and tapers to a small diameter, with the base of the side wall 17 defining an outlet 18 disposed substantially above the tapered section 13 of the annular container 8 .
  • the cyclones 16 extend longitudinally of the apparatus 1 , between the annular container 8 and a central cylindrical container 19 .
  • the central cylindrical container 19 extends from the closure 6 mounted to the base of the cyclone chamber 5 of the upstream stage 2 to a position above the inlet 15 to the first plurality of cyclones 16 .
  • An outlet 20 depends from an upper wall of each of the cyclones 16 of the first downstream stage 50 .
  • the outlets 20 of the cyclones 16 of the first downstream stage 50 are connected in parallel to the inlets 22 of higher efficiency cyclones 23 of a second downstream stage 51 , which is arranged within the annular configuration of the first downstream stage 50 .
  • the inlet 22 of each cyclone 23 is arranged above the outlets 20 of the first downstream stage 50 and directs the partly cleaned air radially inwardly toward the cyclones 23 .
  • the staggered arrangement of the first and second downstream stages 50 , 51 permits efficient inter-stage gas flow, thereby reducing the pressure drop associated with vertical ducts which typically connect adjacent separation stages. Also the arrangement allows successive stages to be nested closely together without the need to allow room for interconnecting ducts between the sidewalls of cyclones of successive stages.
  • the cyclones 23 of the second downstream stage 51 are clustered together in an annular group about the central longitudinal axis of the apparatus 1 and are nested within the first plurality of cyclones 16 .
  • Each of the cyclones 23 of the second downstream stage 51 is fed air that has been partly cleaned, initially by the single low efficiency cyclone of the upstream stage 2 and then by the cyclones 16 of the first downstream stage 50 .
  • the inlets 22 of the cyclones 23 of the second downstream stage 51 extend radially inwardly with respect to the cyclones 16 of the first downstream stage 50 .
  • the cyclones 23 of the second downstream stage 51 each comprise a frustro-conical side wall 24 which extends down from the inlet 22 and tapers to a small diameter with the base of the side wall 24 defining an outlet 25 .
  • the cyclones 23 of the second downstream stage 51 extend longitudinally of the apparatus 1 and are disposed within the confines of the tubular container 19 .
  • An outlet 26 defined by a tubular wall 27 , extends from an upper wall of each of each cyclone 23 of the second downstream stage 51 .
  • the outlets 26 extends into a chamber 28 which comprises an impeller (not shown) for drawing dust and dirt laden air into the apparatus 1 through the inlet 7 , and a filter 29 , which is used to remove any residual particles of dust or dirt from the air, before being vented out of the apparatus 1 through an exhaust duct 30 .
  • the impeller creates an airflow through the upstream and downstream stages 2 , 3 from the dirty air inlet 7 .
  • the tangential orientation of the inlet 7 with respect to the wall 4 creates a cyclonic air flow inside the chamber 5 of the upstream stage 2 , whereby air spirals downwardly around the chamber 5 towards its lower end.
  • the volume of air in the spiral flow is constantly being diminished by virtue of it having been drawn radially through the perforated shroud 12 towards the downstream separation stage 3 .
  • the partly cleaned air flowing through the perforated shroud 12 is drawn upwardly through duct 14 and subsequently passes around the periphery of the apparatus and enters the cyclones 16 of the first downstream stage 50 via inlet 15 .
  • the tangential orientation of the inlet 15 to the tubular walls 17 of the cyclones 16 creates a cyclonic air flow inside each cyclone 16 , whereby air spirals downwardly around the cyclone chamber towards its lower end. As the air flows downwards, the volume of air in the spiral flow is constantly being diminished by virtue of it having been drawn radially inwardly and axially upwardly through the outlet 20 towards the cyclones 23 of the second downstream stage 51 .
  • the denser particles in the rotating airflow within the cyclones 16 strike the frusto-conical wall 17 of the cyclones 16 and fall through the outlets 18 into the base of the apparatus 1 , between the tubular-walled containers 8 and 19 .
  • the partly cleaned air drawn up through the outlets 20 is subsequently passed into the inlet 22 which directs air tangentially into the cyclones 23 .
  • the volume of air in the spiral flow is constantly being diminished by virtue of it having been drawn radially inwardly and axially upwardly through the outlets 26 by the cyclones 23 .
  • Any light particles of dust remaining in the airflow have too much inertia to follow the very tight curve of the airflow and strike the frustro-conical wall 24 of the cyclones 23 and fall downwardly through the outlets 25 into the base of the apparatus 1 within the tubular-walled container 19 . It will be appreciated that the dust separated by both the upstream and downstream stages 2 , 3 can be emptied by removing the closure 6 .
  • the cleaned air is subsequently drawn from the cyclones 23 through the outlets 26 and is passed through a filter 29 arranged within the chamber 28 , before passing out of the apparatus 1 .
  • the cyclones 23 of the second downstream stage 51 are staggered upwardly along the vertical central axis of the apparatus 1 with respect to the cyclones 16 of the first downstream stage 50 , with the cyclones 23 disposed closer to the central axis of the apparatus being arranged above the cyclones 16 disposed further from the central axis.
  • the cyclones of the first downstream stage may be connected to the cyclones of the second downstream stage via one or more intermediate stages, each comprising an annular array of parallel-connected cyclones staggered upwardly along the vertical central axis of the apparatus.
  • FIG. 2 there is shown a plan view of the downstream separation stage of a cyclonic separation apparatus in accordance with a third embodiment of the present invention, with the downstream separation stage comprising three levels of cyclonic separation.
  • the downstream separation stage comprises:
  • the cyclones 31 , 32 , 33 of the first, second and third downstream stages are staggered longitudinally of the apparatus 1 , with those cyclones arranged closer to the central longitudinal axis of the apparatus 1 being disposed above those cyclones arranged further from the central axis.
  • a cyclonic separation apparatus in accordance with the present invention is relatively simple in construction, yet has substantially improved separation efficiency by enabling large numbers of high-efficiency cyclones to be compactly accommodated. While the preferred embodiments of the invention have been shown and described, it will be understood by those skilled in the art that changes of modifications may be made thereto without departing from the true spirit and scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cyclones (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

A cyclonic separation apparatus comprises a plurality of series-connected separation stages 50,51, each comprising a plurality of cyclone separators 16/23 connected in parallel and disposed in a generally annular arrangement about a main vertical axis of the apparatus, with their respective longitudinal cyclone axes extending parallel to the main axis. The successive separation stages 50,51 in the direction of fluid flow are disposed radially inwardly of each other with respect to the main axis of the apparatus and are also vertically staggered upwardly, so that the outlet 20 of one separation stage 50 leads directly into the inlet 22 of the next downstream stage 51. The multi-stage, series connected cyclone separators of the apparatus provide a high separation efficiency, yet the annular arrangement of the stages 50,51 makes the apparatus compact and enables the apparatus to be utilised in a vacuum cleaner.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to cyclonic separation apparatus and particularly, but not exclusively, to cyclonic separation apparatus for use in vacuum cleaners.
  • 2. Related Background Art
  • High separation efficiency cyclonic separation is generally achieved by connecting several separation stages in series. The successive stages are typically arranged in increasing efficiency in the direction of gas flow, although it is known to provide adjacent stages of similar efficiency. For example, GB2424603 discloses a three-stage separator comprising a low-efficiency cylindrical cyclone as the first stage, an annular array of parallel-connected high-efficiency cyclones located in a chamber above the first stage and a second similar array of high-efficiency cyclones as the third stage located in a chamber above the second stage.
  • The height of this arrangement renders it of limited use to vacuum cleaners, where compact dimensions are required. In addition, the respective separation stages discharge their separated material into three separate collection chambers located below the respective cyclone outlets. The collection chambers must be emptied individually, which can be a time consuming process since several parts are required to be removed from the separator unit.
  • GB2424606 discloses a multi-stage cyclonic separator for a vacuum cleaner whereby the high efficiency mini-cyclones of the second and third stages are arranged around the periphery of the of the low-efficiency first stage cyclone. However, the peripheral arrangement of the higher-efficiency stages is restrictive of the number of cyclones possible in the individual stages, having regard to the dimensional limitations applicable to vacuum cleaners.
  • U.S. Pat. No. 2,372,514 discloses three vertically stacked separation stages, but incorporates a separated material collection arrangement whereby material falling from the cyclone outlets is collected in funnels and ducted to a single outlet at the base of the separation unit. The second separation stage of this separator comprises an annular array of eight conical cyclones surrounding a central core tube, and the third stage comprises twenty-four small cyclones arranged in a cluster.
  • Accordingly, there is a requirement for a cyclonic separation apparatus which provides the separation efficiency offered by multi-stage, series connected cyclone separators but which is sufficiently compact to enable the apparatus to be utilised in a vacuum cleaner.
    • SUMMARY OF THE INVENTION
  • In accordance with this invention there is provided a cyclonic separation apparatus comprising a plurality of series-connected separation stages, each of the separation stages comprising a plurality of cyclone separators connected in parallel and disposed in a generally annular arrangement about a main axis of the apparatus with their respective longitudinal cyclone axes extending parallel to said main axis, whereby successive separation stages in the direction of fluid flow are disposed radially inwardly of each other with respect to said main axis of the apparatus.
  • The multi-stage, series connected cyclone separators of the apparatus provide a high separation efficiency, yet the annular arrangement of the stages makes the device compact and enables the apparatus to be utilised in a vacuum cleaner.
  • Preferably each cyclone separator comprises a first end having a first outlet for fluid from which particulate material has been separated, a second end having a second outlet for separated particulate material, and an inlet for particulate-laden fluid located adjacent said first end.
  • Preferably the first end of the cyclone separators in a said series-connected separation stage are longitudinally offset with respect to the first end of the cyclone separators in the separation stage disposed immediately upstream thereof, such that the first outlets of the cyclone separators of the upstream stage are substantially radially in line with the inlets of the cyclone separators of the adjoining downstream stage.
  • Preferably the outlets of each stage are connected to respective collection chambers, preferably being annular in construction and preferably being concentrically-nested.
  • Preferably the collection chamber of the most upstream of said series-connected separation stages is surrounded by an annular separation chamber of a further cyclone separator connected upstream of the first of said series-connected separation stages.
  • Preferably said further cyclone separator comprises a first end having a first outlet for fluid from which particulate material has been separated, a second end having a region for collecting separated particulate material, and an inlet for particulate-laden fluid located adjacent said first end, said first outlet of said further cyclone separator being connected to the inlets the cyclone separators of the upstream stage by one or more axially extending ducts, which are preferably disposed immediately inside the outer wall of the separator unit.
  • Preferably the separator unit comprises a base having a hinged or otherwise openable closure which, when opened, permits separated particulate material to be emptied from each of said stages simultaneously. Preferably, the closure further permits separated particulate material to be emptied from the collection region at the second end of the further cyclone.
  • Preferably the most downstream separation stage comprises a cluster of parallel-connected cyclones.
  • Also, in accordance with this invention there is provided a vacuum cleaner incorporating cyclonic separation apparatus as hereinbefore defined.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The preferred embodiments of the present invention will now be described by way of example only and with reference to the accompanying drawings, in which:
  • FIG. 1 is a sectional view through an embodiment of cyclonic separation apparatus according to the present invention; and
  • FIG. 2 is a schematic plan view through an alternative embodiment of cyclonic separation apparatus according to the present invention.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIG. 1 of the drawings, there is shown a cyclonic separation apparatus 1 according to the present invention for use in a vacuum cleaner. The separation apparatus is mounted to a chassis (not shown) incorporating a handle, the lower end of the chassis being pivotally interconnected to a wheeled floor-cleaning head incorporating a rotatable agitator brush.
  • The separation apparatus 1 comprises a generally cylindrical upright housing, which houses upstream and downstream separation stages 2, 3 at its lower and upper ends respectively. The upstream stage 2 comprises a single low efficiency cyclone having a tubular side wall 4 defining a circular-section cyclone chamber 5. The lower end of the tubular side wall 4 is provided with a closure 6, which can be opened to allow separated dirt and dust to be emptied from the apparatus 1.
  • An inlet duct 7 for carrying dirt and dust laden air from the floor cleaning head extends tangentially through the upper end of the tubular side wall 4 of the upstream stage 2. An elongate tubular container 8 extends through the cyclone chamber 5 along the centre axis thereof. The lower end of the container 8 is sealingly closed by a seal 9, which is mounted to the closure 6 such that the lower end of the container 8 is also opened when the closure 6 is opened.
  • The upper end of the upstream stage 2 is closed by an annular end wall 10 having a central aperture 11, through which the tubular container 8 extends. A perforated shroud 12 depends from the upper end wall into the cyclone chamber 13, the lower end of the shroud being sealed against the external surface of the tubular container 8.
  • The upper end of the container 8 extends into the downstream stage 3 about a transition section 13 whereby the container increases in diameter in moving from the upstream separation stage 2 to the downstream stage 3. The tubular container 8 defines an annular cavity or duct 14 which extends circumferentially of the apparatus 1, with the upper end of the duct 14 defining the inlet 15 to the downstream separation stage 3.
  • The downstream separation stage 3 comprises a first stage 50 having a plurality of parallel connected high efficiency cyclones 16 arranged in an annular configuration. Each cyclone 16 of the first downstream stage 50 comprises a radially directed inlet 15 connected to the outlet of the upstream separation stage 2 via said annular cavity or duct 14. The cyclones 16 of the first downstream stage 50 each comprise a frustro-conical side wall 17 which extends downwardly from the inlet 15 and tapers to a small diameter, with the base of the side wall 17 defining an outlet 18 disposed substantially above the tapered section 13 of the annular container 8.
  • The cyclones 16 extend longitudinally of the apparatus 1, between the annular container 8 and a central cylindrical container 19. The central cylindrical container 19 extends from the closure 6 mounted to the base of the cyclone chamber 5 of the upstream stage 2 to a position above the inlet 15 to the first plurality of cyclones 16.
  • An outlet 20, defined by a tubular wall 21, depends from an upper wall of each of the cyclones 16 of the first downstream stage 50. The outlets 20 of the cyclones 16 of the first downstream stage 50 are connected in parallel to the inlets 22 of higher efficiency cyclones 23 of a second downstream stage 51, which is arranged within the annular configuration of the first downstream stage 50. The inlet 22 of each cyclone 23 is arranged above the outlets 20 of the first downstream stage 50 and directs the partly cleaned air radially inwardly toward the cyclones 23. The staggered arrangement of the first and second downstream stages 50,51 permits efficient inter-stage gas flow, thereby reducing the pressure drop associated with vertical ducts which typically connect adjacent separation stages. Also the arrangement allows successive stages to be nested closely together without the need to allow room for interconnecting ducts between the sidewalls of cyclones of successive stages.
  • In accordance with a first embodiment of the present invention, the cyclones 23 of the second downstream stage 51 are clustered together in an annular group about the central longitudinal axis of the apparatus 1 and are nested within the first plurality of cyclones 16. Each of the cyclones 23 of the second downstream stage 51 is fed air that has been partly cleaned, initially by the single low efficiency cyclone of the upstream stage 2 and then by the cyclones 16 of the first downstream stage 50. The inlets 22 of the cyclones 23 of the second downstream stage 51 extend radially inwardly with respect to the cyclones 16 of the first downstream stage 50. The cyclones 23 of the second downstream stage 51 each comprise a frustro-conical side wall 24 which extends down from the inlet 22 and tapers to a small diameter with the base of the side wall 24 defining an outlet 25.
  • The cyclones 23 of the second downstream stage 51 extend longitudinally of the apparatus 1 and are disposed within the confines of the tubular container 19. An outlet 26, defined by a tubular wall 27, extends from an upper wall of each of each cyclone 23 of the second downstream stage 51. The outlets 26 extends into a chamber 28 which comprises an impeller (not shown) for drawing dust and dirt laden air into the apparatus 1 through the inlet 7, and a filter 29, which is used to remove any residual particles of dust or dirt from the air, before being vented out of the apparatus 1 through an exhaust duct 30.
  • In use, the impeller creates an airflow through the upstream and downstream stages 2, 3 from the dirty air inlet 7. The tangential orientation of the inlet 7 with respect to the wall 4 creates a cyclonic air flow inside the chamber 5 of the upstream stage 2, whereby air spirals downwardly around the chamber 5 towards its lower end. As the air flows downwards, the volume of air in the spiral flow is constantly being diminished by virtue of it having been drawn radially through the perforated shroud 12 towards the downstream separation stage 3.
  • As the air swirls inside the chamber 5, larger (denser) particles in the rotating airflow have too much inertia to follow the tight curve of the airflow and strike the outside wall 4 of the chamber 5, moving then to the bottom of the apparatus 1 where they are deposited in the lower region of the chamber 5.
  • The partly cleaned air flowing through the perforated shroud 12 is drawn upwardly through duct 14 and subsequently passes around the periphery of the apparatus and enters the cyclones 16 of the first downstream stage 50 via inlet 15.
  • The tangential orientation of the inlet 15 to the tubular walls 17 of the cyclones 16 creates a cyclonic air flow inside each cyclone 16, whereby air spirals downwardly around the cyclone chamber towards its lower end. As the air flows downwards, the volume of air in the spiral flow is constantly being diminished by virtue of it having been drawn radially inwardly and axially upwardly through the outlet 20 towards the cyclones 23 of the second downstream stage 51. The denser particles in the rotating airflow within the cyclones 16 strike the frusto-conical wall 17 of the cyclones 16 and fall through the outlets 18 into the base of the apparatus 1, between the tubular- walled containers 8 and 19.
  • The partly cleaned air drawn up through the outlets 20 is subsequently passed into the inlet 22 which directs air tangentially into the cyclones 23. This creates a cyclonic air flow inside each cyclone 23, whereby air spirals downwardly around the chamber towards its lower end. As the air flows downwards, the volume of air in the spiral flow is constantly being diminished by virtue of it having been drawn radially inwardly and axially upwardly through the outlets 26 by the cyclones 23. Any light particles of dust remaining in the airflow have too much inertia to follow the very tight curve of the airflow and strike the frustro-conical wall 24 of the cyclones 23 and fall downwardly through the outlets 25 into the base of the apparatus 1 within the tubular-walled container 19. It will be appreciated that the dust separated by both the upstream and downstream stages 2, 3 can be emptied by removing the closure 6.
  • The cleaned air is subsequently drawn from the cyclones 23 through the outlets 26 and is passed through a filter 29 arranged within the chamber 28, before passing out of the apparatus 1.
  • The cyclones 23 of the second downstream stage 51 are staggered upwardly along the vertical central axis of the apparatus 1 with respect to the cyclones 16 of the first downstream stage 50, with the cyclones 23 disposed closer to the central axis of the apparatus being arranged above the cyclones 16 disposed further from the central axis.
  • In a second embodiment of the present invention, the cyclones of the first downstream stage may be connected to the cyclones of the second downstream stage via one or more intermediate stages, each comprising an annular array of parallel-connected cyclones staggered upwardly along the vertical central axis of the apparatus.
  • Referring to FIG. 2, there is shown a plan view of the downstream separation stage of a cyclonic separation apparatus in accordance with a third embodiment of the present invention, with the downstream separation stage comprising three levels of cyclonic separation.
  • In this embodiment, the downstream separation stage comprises:
      • a first downstream stage, having a plurality of parallel connected high efficiency cyclones 31 arranged in an annular configuration;
      • a second downstream stage, having a plurality of parallel connected higher efficiency cyclones 32 arranged in an annular configuration and nested within the first downstream stage; and
      • a third downstream stage, having a plurality of parallel connected higher efficiency cyclones 33 clustered together and nested within the second downstream stage.
  • The cyclones 31, 32, 33 of the first, second and third downstream stages are staggered longitudinally of the apparatus 1, with those cyclones arranged closer to the central longitudinal axis of the apparatus 1 being disposed above those cyclones arranged further from the central axis.
  • A cyclonic separation apparatus in accordance with the present invention is relatively simple in construction, yet has substantially improved separation efficiency by enabling large numbers of high-efficiency cyclones to be compactly accommodated. While the preferred embodiments of the invention have been shown and described, it will be understood by those skilled in the art that changes of modifications may be made thereto without departing from the true spirit and scope of the invention.

Claims (12)

1. A cyclonic separation apparatus comprising a plurality of series-connected separation stages, each of the separation stages comprising a plurality of cyclone separators connected in parallel and disposed in a generally annular arrangement about a main axis of the apparatus with their respective longitudinal cyclone axes extending parallel to said main axis, whereby successive separation stages in the direction of fluid flow are disposed radially inwardly of each other with respect to said main axis of the apparatus.
2. A cyclonic separation apparatus as claimed in claim 1, in which each cyclone separator comprises a first end having a first outlet for fluid from which particulate material has been separated, a second end having a second outlet for separated particulate material, and an inlet for particulate-laden fluid located adjacent said first end.
3. A cyclonic separation apparatus as claimed in claim 2, in which the first end of the cyclone separators in a said series-connected separation stage are longitudinally offset with respect to the first end of the cyclone separators in the separation stage disposed immediately upstream thereof, such that the first outlets of the cyclone separators of the upstream stage are substantially radially in line with the inlets of the cyclone separators of the adjoining downstream stage.
4. A cyclonic separation apparatus as claimed in claim 2, in which the outlets of each stage are connected to respective collection chambers.
5. A cyclonic separation apparatus as claimed in claim 4, in which the collection chambers are annular in construction.
6. A cyclonic separation apparatus as claimed in claim 4, in which the collection chambers are concentrically-nested.
7. A cyclonic separation apparatus as claimed in claim 4, in which the collection chamber of the most upstream of said series-connected separation stages is surrounded by an annular separation chamber of a further cyclone separator connected upstream of the first of said series-connected separation stages.
8. A cyclonic separation apparatus as claimed in claim 7, in which said further cyclone separator comprises a first end having a first outlet for fluid from which particulate material has been separated, a second end having a region for collecting separated particulate material, and an inlet for particulate-laden fluid located adjacent said first end, said first outlet of said further cyclone separator being connected to the inlets the cyclone separators of the upstream stage by one or more axially extending ducts.
9. A cyclonic separation apparatus as claimed in claim 8, in which the ducts are disposed immediately inside an outer wall of the apparatus.
10. A cyclonic separation apparatus as claimed in claim 1, comprising a base having a hinged or otherwise openable closure which, when opened, permits separated particulate material to be emptied from each of said stages simultaneously. Preferably, the closure further permits separated particulate material to be emptied from the collection region at the second end of the further cyclone.
11. A cyclonic separation apparatus as claimed in claim 7, comprising a base having a hinged or otherwise openable closure which, when opened, permits separated particulate material to be emptied from each of said stages and from the collection region at the second end of the further cyclone simultaneously.
12. A cyclonic separation apparatus as claimed claim 1, in which the most downstream separation stage comprises a cluster of parallel-connected cyclones.
US12/255,785 2007-10-23 2008-10-22 Cyclonic separation apparatus Expired - Fee Related US7976597B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0720699.8A GB2453949B (en) 2007-10-23 2007-10-23 Cyclonic separation apparatus
GB0720699.8 2007-10-23

Publications (2)

Publication Number Publication Date
US20090100810A1 true US20090100810A1 (en) 2009-04-23
US7976597B2 US7976597B2 (en) 2011-07-12

Family

ID=38829729

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/255,785 Expired - Fee Related US7976597B2 (en) 2007-10-23 2008-10-22 Cyclonic separation apparatus

Country Status (5)

Country Link
US (1) US7976597B2 (en)
EP (1) EP2052659B1 (en)
CN (1) CN101416849B (en)
AU (1) AU2008230035B2 (en)
GB (1) GB2453949B (en)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110259819A1 (en) * 2007-07-30 2011-10-27 Stephen Beedie Cyclone apparatus
US20120284952A1 (en) * 2011-05-11 2012-11-15 Dyson Technology Limited Surface treating appliance
US20120284954A1 (en) * 2011-05-11 2012-11-15 Dyson Technology Limited Surface treating appliance
JP2012236028A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating electric appliance
JP2012236032A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating appliance
JP2012236029A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating electric appliance
JP2012236033A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating appliance
JP2012236034A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating appliance
RU2471566C2 (en) * 2010-11-25 2013-01-10 Открытое акционерное общество "Центральное конструкторское бюро машиностроения" Set of cleaners
JP2013510696A (en) * 2009-11-16 2013-03-28 ダイソン テクノロジー リミテッド Surface treatment appliance
US20130074613A1 (en) * 2010-04-15 2013-03-28 Cytogen Co., Ltd. Microfluidic device and method for isolating target using same
CN103040410A (en) * 2011-10-12 2013-04-17 百得有限公司 Cyclonic separation apparatus
US20130091654A1 (en) * 2011-10-12 2013-04-18 Black & Decker Inc. Cyclonic separation apparatus for a vacuum cleaner
US20130091812A1 (en) * 2011-10-12 2013-04-18 Black & Decker Inc. Motor, fan and cyclonic separation apparatus arrangement
US20130160233A1 (en) * 2011-12-22 2013-06-27 Dyson Technology Limited Separating apparatus
JP2013135819A (en) * 2011-12-28 2013-07-11 Toshiba Corp Vacuum cleaner
CN103976691A (en) * 2013-02-11 2014-08-13 创科地板护理技术有限公司 Cyclonic separator assembly for a vacuum cleaner
US8826492B2 (en) 2011-05-11 2014-09-09 Dyson Technology Limited Surface treating appliance
US20140366495A1 (en) * 2011-12-22 2014-12-18 Dyson Technology Limited Cyclonic separating apparatus
US8932472B2 (en) 2011-10-25 2015-01-13 National Oilwell Varco, L.P. Separator system and related methods
US9005325B2 (en) * 2011-10-12 2015-04-14 Black & Decker Inc. Cyclonic separation apparatus
US20150216383A1 (en) * 2014-01-31 2015-08-06 Dyson Technology Limited Separating apparatus in a vacuum cleaner
CN105640433A (en) * 2014-12-01 2016-06-08 Lg电子株式会社 Vacuum cleaner and dust collecting apparatus
US9603498B2 (en) 2014-01-31 2017-03-28 Dyson Technology Limited Separating apparatus in a vacuum cleaner
WO2017088022A1 (en) * 2015-11-24 2017-06-01 Rugged Industries Pty Ltd A cyclonic vacuum cleaner
KR20170070193A (en) * 2014-10-22 2017-06-21 다이슨 테크놀러지 리미티드 Apparatus for separating particles from an airflow
KR20170070194A (en) * 2014-10-22 2017-06-21 다이슨 테크놀러지 리미티드 A separator for removing dirt particles from an airflow
US20180000295A1 (en) * 2016-06-30 2018-01-04 Jiangsu Midea Cleaning Appliances Co., Ltd. Dust cup assembly and handheld cleaner having the same
US10071328B2 (en) 2014-10-22 2018-09-11 Dyson Technology Limited Apparatus for separating particles from a fluid
US10194778B2 (en) * 2015-01-19 2019-02-05 Lg Electronics Inc. Dust collector for vacuum cleaner
US20200215555A1 (en) * 2017-06-19 2020-07-09 Tti (Macao Commercial Offshore) Limited Cyclonic separator device
US10722832B1 (en) * 2017-01-27 2020-07-28 James Hardie Technology Limited Dust removal system
US20210307578A1 (en) * 2016-08-25 2021-10-07 Lg Electronics Inc. Cleaner
US11191404B2 (en) * 2018-05-31 2021-12-07 Lg Electronics Inc. Cleaner
US20220287525A1 (en) * 2021-03-11 2022-09-15 Beijing Shunzao Technology Co., Ltd. Cyclonic separating device and surface cleaning device
US20220400918A1 (en) * 2021-06-17 2022-12-22 Shenzhen Shermon Technology Co., Limited Separation structure for dust cup of vacuum cleaner

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2426726B (en) * 2005-05-27 2008-11-05 Dyson Technology Ltd Cyclonic separating apparatus
GB2475312B (en) * 2009-11-16 2014-01-08 Dyson Technology Ltd A surface treating appliance
GB2481608B (en) * 2010-06-30 2015-03-04 Dyson Technology Ltd A surface treating appliance
CN102430485A (en) * 2011-11-07 2012-05-02 成都鑫三洋科技发展有限公司 Spiral-flow type separator
CN103519749B (en) * 2012-07-02 2016-05-11 胡海荣 Cyclone separation dust cup of dust catcher
CN103565360B (en) * 2012-07-27 2016-10-05 莱克电气股份有限公司 There is the dust cup of dust collector of ash guiding pipe
SE537139C2 (en) * 2012-10-09 2015-02-17 Nano Control Ab Apparatus for separating particles from a gas stream
DE102013016296A1 (en) * 2012-10-15 2014-04-17 Mann + Hummel Gmbh cyclone
DE102013214387B4 (en) * 2013-07-23 2020-10-22 Eberspächer Climate Control Systems GmbH Inflow element, in particular for a combustion air flow path in the vehicle heater
GB2519559B (en) 2013-10-24 2015-11-11 Dyson Technology Ltd A cyclonic separator having stacked cyclones
CN106170238B (en) 2014-04-04 2020-06-02 创科实业有限公司 Vacuum cleaner with a vacuum cleaner head
GB2531561B (en) * 2014-10-22 2018-03-21 Dyson Technology Ltd Vacuum cleaner with motor between separation stages
KR102202268B1 (en) * 2014-12-17 2021-01-13 엘지전자 주식회사 Dust collector for vacuum cleaner
KR101653481B1 (en) 2015-01-16 2016-09-01 엘지전자 주식회사 Vacuum cleaner and dust collecting apparatus
US9885196B2 (en) 2015-01-26 2018-02-06 Hayward Industries, Inc. Pool cleaner power coupling
US9909333B2 (en) 2015-01-26 2018-03-06 Hayward Industries, Inc. Swimming pool cleaner with hydrocyclonic particle separator and/or six-roller drive system
SE541654C2 (en) * 2015-06-02 2019-11-19 Yaovaphankul Luxnara Multi-Stage Axial Flow Cyclone Separator
CA3019858A1 (en) 2016-04-05 2017-10-12 Cory M Holdings Ltd. Particulate separator
US10251521B2 (en) * 2016-04-25 2019-04-09 Omachron Intellectual Property Inc. Cyclone assembly for surface cleaning apparatus and a surface cleaning apparatus having same
CN106391336B (en) * 2016-10-28 2021-05-07 北京建筑材料科学研究总院有限公司 Fine ash cyclone separator
US11285495B2 (en) * 2016-12-27 2022-03-29 Omachron Intellectual Property Inc. Multistage cyclone and surface cleaning apparatus having same
US10156083B2 (en) 2017-05-11 2018-12-18 Hayward Industries, Inc. Pool cleaner power coupling
US9885194B1 (en) 2017-05-11 2018-02-06 Hayward Industries, Inc. Pool cleaner impeller subassembly
US9896858B1 (en) 2017-05-11 2018-02-20 Hayward Industries, Inc. Hydrocyclonic pool cleaner
KR102023396B1 (en) * 2017-09-22 2019-09-20 엘지전자 주식회사 Dust collector and cleaner having the same
KR102047332B1 (en) 2017-09-22 2019-11-21 엘지전자 주식회사 Dust collector and cleaner having the same
KR102023395B1 (en) 2017-09-22 2019-09-20 엘지전자 주식회사 Dust collector and cleaner having the same
KR102021860B1 (en) * 2017-09-28 2019-09-17 엘지전자 주식회사 Dust collector and cleaner having the same
CN107575206A (en) * 2017-10-17 2018-01-12 西南石油大学 A kind of modularization sea bed gas hydrate underground separator
CN107854048B (en) * 2017-11-23 2023-03-10 珠海格力电器股份有限公司 Cyclone separation device and dust collector with same
TWM609892U (en) * 2020-09-09 2021-04-01 財團法人工業技術研究院 Particles capturing system
CN114225606B (en) 2020-09-09 2023-05-02 财团法人工业技术研究院 Particulate trap system
CN112138880A (en) * 2020-09-21 2020-12-29 盐城工学院 Graded dust collecting device
DE102020213316A1 (en) * 2020-10-22 2022-04-28 Robert Bosch Gesellschaft mit beschränkter Haftung Mass separator for gas from hydraulic pressure medium and mass separator arrangement
USD1017156S1 (en) 2022-05-09 2024-03-05 Dupray Ventures Inc. Cleaner

Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2372514A (en) * 1941-08-29 1945-03-27 Western Precipitation Corp Multistage centrifugal separating apparatus
US2553175A (en) * 1949-02-01 1951-05-15 Beaumont Birch Company Apparatus for collecting ash and dust
US2687780A (en) * 1951-12-28 1954-08-31 Frank R Culhane Gas cleaning apparatus
US20010054213A1 (en) * 2000-06-24 2001-12-27 Jang-Keun Oh Upright type vacuum cleaner having a cyclone type dust collector
US20020020154A1 (en) * 2000-08-19 2002-02-21 Byung-Sun Yang Cyclone dust collector and vacuum cleaner using such dust collector
US20060230717A1 (en) * 2005-03-29 2006-10-19 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust collecting apparatus
US20070095030A1 (en) * 2005-10-28 2007-05-03 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separating apparatus
US20070199284A1 (en) * 2006-02-24 2007-08-30 Samsung Gwangju Electronics Co., Ltd. Cyclone dust collecting apparatus for vacuum cleaner
US20070209334A1 (en) * 2006-03-10 2007-09-13 Gbd Corp. Vacuum cleaner with a removable screen
US20070214754A1 (en) * 2006-03-15 2007-09-20 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone contaminants collector for vacuum cleaner
US7273506B2 (en) * 2004-05-12 2007-09-25 Samsung Gwangju Electronics Co., Ltd. Cyclone dust collecting apparatus and vacuum cleaner using the same
US20080155948A1 (en) * 2006-12-22 2008-07-03 David Benjamin Smith Cyclonic Separation Apparatus
US20080155947A1 (en) * 2006-12-28 2008-07-03 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separating apparatus of a vacuum cleaner
US20080172994A1 (en) * 2005-05-27 2008-07-24 Dyson Technology Limited Dirt and Dust Cyclonic Separating Apparatus
US20080184681A1 (en) * 2007-02-05 2008-08-07 Samsung Gwangju Electronics Co., Ltd. Cyclone separating apparatus for a vacuum cleaner
US7419521B2 (en) * 2004-04-16 2008-09-02 Samsung Gwangju Electronics Co., Ltd. Dust collecting apparatus for a vacuum cleaner
US20080289140A1 (en) * 2005-05-27 2008-11-27 Dyson Technology Limited Cyclonic Separating Apparatus
US7462212B2 (en) * 2005-03-29 2008-12-09 Samsung Gwangju Electronics Co., Ltd. Cyclone dust separating apparatus for vacuum cleaner and vacuum cleaner having the same
US7470299B2 (en) * 2005-03-29 2008-12-30 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separator and a vacuum cleaner using the same
US7473289B2 (en) * 2005-03-29 2009-01-06 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone apparatus and vacuum cleaner having the same
US20090113859A1 (en) * 2007-11-05 2009-05-07 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separating apparatus of vacuum cleaner
US20090113663A1 (en) * 2007-11-01 2009-05-07 Dyson Technology Limited Cyclonic separating apparatus
US20090313959A1 (en) * 2006-07-18 2009-12-24 Dyson Technology Limited Handheld cleaning appliance
US20090320421A1 (en) * 2005-10-09 2009-12-31 Dongqi Qian Cyclone separating device of a cleaner
US7655058B2 (en) * 2006-03-23 2010-02-02 Hoover Limited Cyclonic vacuum cleaner
US20100218338A1 (en) * 2009-02-27 2010-09-02 Dyson Technology Limited Cyclonic Separating Apparatus
US7867307B2 (en) * 2007-10-18 2011-01-11 Dyson Technology Limited Cyclonic separating apparatus for a cleaning appliance
US7879120B2 (en) * 2007-11-05 2011-02-01 Samsung Gwangju Electronics Co., Ltd. Vacuum cleaner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL75020C (en) * 1950-06-14
DE1739315U (en) * 1956-09-12 1957-02-07 Theo Horstkoetter DUST COLLECTOR WITH A VARIETY OF CYCLONES.
GB2399780A (en) * 2003-03-28 2004-09-29 Dyson Ltd Arrangement of cyclones for noise damping
KR100554237B1 (en) * 2003-09-08 2006-02-22 삼성광주전자 주식회사 A cyclone separating apparatus and vacumm cleaner equipped whth such a device
GB2424606C (en) 2005-03-29 2010-12-01 Samsung Kwangju Electronics Co Cyclonic dust-separating apparatus.
DE102005020400A1 (en) * 2005-05-02 2006-11-09 Positec Group Limited, Wanchai Device for filtering extremely fine dust
KR100667877B1 (en) * 2005-10-10 2007-01-16 삼성광주전자 주식회사 Multi cyclone dust collecting apparatus

Patent Citations (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2372514A (en) * 1941-08-29 1945-03-27 Western Precipitation Corp Multistage centrifugal separating apparatus
US2553175A (en) * 1949-02-01 1951-05-15 Beaumont Birch Company Apparatus for collecting ash and dust
US2687780A (en) * 1951-12-28 1954-08-31 Frank R Culhane Gas cleaning apparatus
US20010054213A1 (en) * 2000-06-24 2001-12-27 Jang-Keun Oh Upright type vacuum cleaner having a cyclone type dust collector
US20020020154A1 (en) * 2000-08-19 2002-02-21 Byung-Sun Yang Cyclone dust collector and vacuum cleaner using such dust collector
US7419521B2 (en) * 2004-04-16 2008-09-02 Samsung Gwangju Electronics Co., Ltd. Dust collecting apparatus for a vacuum cleaner
US7273506B2 (en) * 2004-05-12 2007-09-25 Samsung Gwangju Electronics Co., Ltd. Cyclone dust collecting apparatus and vacuum cleaner using the same
US20090019821A1 (en) * 2005-03-29 2009-01-22 Samsung Gwangju Electronic Co., Ltd. Multi-cyclone dust separator and a vacuum cleaner using the same
US7473289B2 (en) * 2005-03-29 2009-01-06 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone apparatus and vacuum cleaner having the same
US7470299B2 (en) * 2005-03-29 2008-12-30 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separator and a vacuum cleaner using the same
US7462212B2 (en) * 2005-03-29 2008-12-09 Samsung Gwangju Electronics Co., Ltd. Cyclone dust separating apparatus for vacuum cleaner and vacuum cleaner having the same
US7534279B2 (en) * 2005-03-29 2009-05-19 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust collecting apparatus
US20060230717A1 (en) * 2005-03-29 2006-10-19 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust collecting apparatus
US20080289140A1 (en) * 2005-05-27 2008-11-27 Dyson Technology Limited Cyclonic Separating Apparatus
US20080172994A1 (en) * 2005-05-27 2008-07-24 Dyson Technology Limited Dirt and Dust Cyclonic Separating Apparatus
US20090320421A1 (en) * 2005-10-09 2009-12-31 Dongqi Qian Cyclone separating device of a cleaner
US20070095030A1 (en) * 2005-10-28 2007-05-03 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separating apparatus
US20070199284A1 (en) * 2006-02-24 2007-08-30 Samsung Gwangju Electronics Co., Ltd. Cyclone dust collecting apparatus for vacuum cleaner
US20070209334A1 (en) * 2006-03-10 2007-09-13 Gbd Corp. Vacuum cleaner with a removable screen
US20070214754A1 (en) * 2006-03-15 2007-09-20 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone contaminants collector for vacuum cleaner
US7655058B2 (en) * 2006-03-23 2010-02-02 Hoover Limited Cyclonic vacuum cleaner
US20090313959A1 (en) * 2006-07-18 2009-12-24 Dyson Technology Limited Handheld cleaning appliance
US20080155948A1 (en) * 2006-12-22 2008-07-03 David Benjamin Smith Cyclonic Separation Apparatus
US20080155947A1 (en) * 2006-12-28 2008-07-03 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separating apparatus of a vacuum cleaner
US20080184681A1 (en) * 2007-02-05 2008-08-07 Samsung Gwangju Electronics Co., Ltd. Cyclone separating apparatus for a vacuum cleaner
US7867307B2 (en) * 2007-10-18 2011-01-11 Dyson Technology Limited Cyclonic separating apparatus for a cleaning appliance
US20090113663A1 (en) * 2007-11-01 2009-05-07 Dyson Technology Limited Cyclonic separating apparatus
US20090113859A1 (en) * 2007-11-05 2009-05-07 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separating apparatus of vacuum cleaner
US7744668B2 (en) * 2007-11-05 2010-06-29 Samsung Gwangju Electronics Co., Ltd. Multi-cyclone dust separating apparatus of vacuum cleaner
US7879120B2 (en) * 2007-11-05 2011-02-01 Samsung Gwangju Electronics Co., Ltd. Vacuum cleaner
US20100218338A1 (en) * 2009-02-27 2010-09-02 Dyson Technology Limited Cyclonic Separating Apparatus

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110259819A1 (en) * 2007-07-30 2011-10-27 Stephen Beedie Cyclone apparatus
US8439206B2 (en) * 2007-07-30 2013-05-14 Merpro Tortek Limited Cyclone apparatus
JP2015033647A (en) * 2009-11-16 2015-02-19 ダイソン テクノロジー リミテッド Surface cleaner
JP2016105914A (en) * 2009-11-16 2016-06-16 ダイソン テクノロジー リミテッド Surface cleaner
JP2013510696A (en) * 2009-11-16 2013-03-28 ダイソン テクノロジー リミテッド Surface treatment appliance
US9372134B2 (en) * 2010-04-15 2016-06-21 Cytogen Co., Ltd. Microfluidic device and method for isolating target using same
US20130074613A1 (en) * 2010-04-15 2013-03-28 Cytogen Co., Ltd. Microfluidic device and method for isolating target using same
RU2471566C2 (en) * 2010-11-25 2013-01-10 Открытое акционерное общество "Центральное конструкторское бюро машиностроения" Set of cleaners
US9282863B2 (en) 2011-05-11 2016-03-15 Dyson Technology Limited Surface treating appliance
JP2015057101A (en) * 2011-05-11 2015-03-26 ダイソン テクノロジー リミテッド Surface treating appliance
JP2012236033A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating appliance
KR101558409B1 (en) 2011-05-11 2015-10-07 다이슨 테크놀러지 리미티드 A surface treating appliance
US20120284952A1 (en) * 2011-05-11 2012-11-15 Dyson Technology Limited Surface treating appliance
US9204771B2 (en) 2011-05-11 2015-12-08 Dyson Technology Limited Surface treating appliance
JP2012236029A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating electric appliance
KR101531983B1 (en) * 2011-05-11 2015-06-26 다이슨 테크놀러지 리미티드 A surface treating appliance with cyclones arranged at different angles
US9044126B2 (en) 2011-05-11 2015-06-02 Dyson Technology Limited Surface treating appliance
US9044125B2 (en) 2011-05-11 2015-06-02 Dyson Technology Limited Surface treating appliance
JP2012236034A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating appliance
US8707512B2 (en) * 2011-05-11 2014-04-29 Dyson Technology Limited Surface treating appliance
US8707511B2 (en) * 2011-05-11 2014-04-29 Dyson Technology Limited Surface treating appliance
US20120284954A1 (en) * 2011-05-11 2012-11-15 Dyson Technology Limited Surface treating appliance
JP2012236032A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating appliance
US8806708B2 (en) 2011-05-11 2014-08-19 Dyson Technology Limited Surface treating appliance
US8826492B2 (en) 2011-05-11 2014-09-09 Dyson Technology Limited Surface treating appliance
JP2012236028A (en) * 2011-05-11 2012-12-06 Dyson Technology Ltd Surface treating electric appliance
KR101558408B1 (en) 2011-05-11 2015-10-07 다이슨 테크놀러지 리미티드 A surface treating appliance with cyclonic separation unit
AU2012233039B2 (en) * 2011-10-12 2016-12-08 Black & Decker Inc Cyclonic separation apparatus for a vacuum cleaner
US8979960B2 (en) * 2011-10-12 2015-03-17 Black & Decker Inc. Motor, fan and cyclonic separation apparatus arrangement
US8657904B2 (en) * 2011-10-12 2014-02-25 Black & Decker Inc. Cyclonic separation apparatus for a vacuum cleaner
US9005325B2 (en) * 2011-10-12 2015-04-14 Black & Decker Inc. Cyclonic separation apparatus
US8657905B2 (en) * 2011-10-12 2014-02-25 Black & Decker Inc. Cyclonic separation apparatus
AU2012238308B2 (en) * 2011-10-12 2016-12-15 Black & Decker Inc Cyclonic separation apparatus
AU2012238307B2 (en) * 2011-10-12 2016-12-15 Black & Decker Inc Cyclonic separation apparatus
US20130091812A1 (en) * 2011-10-12 2013-04-18 Black & Decker Inc. Motor, fan and cyclonic separation apparatus arrangement
US20130091654A1 (en) * 2011-10-12 2013-04-18 Black & Decker Inc. Cyclonic separation apparatus for a vacuum cleaner
CN103040410A (en) * 2011-10-12 2013-04-17 百得有限公司 Cyclonic separation apparatus
US8932472B2 (en) 2011-10-25 2015-01-13 National Oilwell Varco, L.P. Separator system and related methods
US9131818B2 (en) * 2011-12-22 2015-09-15 Dyson Technology Limited Separating apparatus
US9848748B2 (en) * 2011-12-22 2017-12-26 Dyson Technology Limited Cyclonic separating apparatus
JP2015502235A (en) * 2011-12-22 2015-01-22 ダイソン テクノロジー リミテッド Cyclone separator
US20140366495A1 (en) * 2011-12-22 2014-12-18 Dyson Technology Limited Cyclonic separating apparatus
US20130160233A1 (en) * 2011-12-22 2013-06-27 Dyson Technology Limited Separating apparatus
JP2013135819A (en) * 2011-12-28 2013-07-11 Toshiba Corp Vacuum cleaner
US20140223871A1 (en) * 2013-02-11 2014-08-14 Techtronic Floor Care Technology Limited Cyclonic separator assembly for a vacuum cleaner
US9439547B2 (en) * 2013-02-11 2016-09-13 Techtronic Floor Care Technology Limited Cyclonic separator assembly for a vacuum cleaner
CN103976691A (en) * 2013-02-11 2014-08-13 创科地板护理技术有限公司 Cyclonic separator assembly for a vacuum cleaner
US20150216383A1 (en) * 2014-01-31 2015-08-06 Dyson Technology Limited Separating apparatus in a vacuum cleaner
US9456724B2 (en) * 2014-01-31 2016-10-04 Dyson Technology Limited Separating apparatus in a vacuum cleaner
US9603498B2 (en) 2014-01-31 2017-03-28 Dyson Technology Limited Separating apparatus in a vacuum cleaner
US10071328B2 (en) 2014-10-22 2018-09-11 Dyson Technology Limited Apparatus for separating particles from a fluid
KR102007349B1 (en) 2014-10-22 2019-10-01 다이슨 테크놀러지 리미티드 Apparatus for separating particles from an airflow
KR20170070194A (en) * 2014-10-22 2017-06-21 다이슨 테크놀러지 리미티드 A separator for removing dirt particles from an airflow
US10555651B2 (en) 2014-10-22 2020-02-11 Dyson Technology Limited Apparatus for separating particles from an airflow
AU2015334712B2 (en) * 2014-10-22 2018-10-04 Dyson Technology Limited A separator for removing dirt particles from an airflow
US10143346B2 (en) * 2014-10-22 2018-12-04 Dyson Technology Limited Separator for removing dirt particles from an airflow
KR102007350B1 (en) 2014-10-22 2019-08-05 다이슨 테크놀러지 리미티드 A separator for removing dirt particles from an airflow
KR20170070193A (en) * 2014-10-22 2017-06-21 다이슨 테크놀러지 리미티드 Apparatus for separating particles from an airflow
CN105640433A (en) * 2014-12-01 2016-06-08 Lg电子株式会社 Vacuum cleaner and dust collecting apparatus
US10130226B2 (en) 2014-12-01 2018-11-20 Lg Electronics Inc. Vacuum cleaner and dust collecting apparatus
US10194778B2 (en) * 2015-01-19 2019-02-05 Lg Electronics Inc. Dust collector for vacuum cleaner
WO2017088022A1 (en) * 2015-11-24 2017-06-01 Rugged Industries Pty Ltd A cyclonic vacuum cleaner
US10413140B2 (en) * 2016-06-30 2019-09-17 Jiangsu Midea Cleaning Appliances Co., Ltd. Dust cup assembly and handheld cleaner having the same
US20180000295A1 (en) * 2016-06-30 2018-01-04 Jiangsu Midea Cleaning Appliances Co., Ltd. Dust cup assembly and handheld cleaner having the same
US20210307578A1 (en) * 2016-08-25 2021-10-07 Lg Electronics Inc. Cleaner
US11751739B2 (en) * 2016-08-25 2023-09-12 Lg Electronics Inc. Cleaner
US10722832B1 (en) * 2017-01-27 2020-07-28 James Hardie Technology Limited Dust removal system
US20200215555A1 (en) * 2017-06-19 2020-07-09 Tti (Macao Commercial Offshore) Limited Cyclonic separator device
US10960414B2 (en) * 2017-06-19 2021-03-30 Tti (Macao Commercial Offshore) Limited Cyclonic separator device
US11191404B2 (en) * 2018-05-31 2021-12-07 Lg Electronics Inc. Cleaner
US20220287525A1 (en) * 2021-03-11 2022-09-15 Beijing Shunzao Technology Co., Ltd. Cyclonic separating device and surface cleaning device
US11684228B2 (en) * 2021-03-11 2023-06-27 Beijing Shunzao Technology Co., Ltd. Cyclonic separating device and surface cleaning device
US20220400918A1 (en) * 2021-06-17 2022-12-22 Shenzhen Shermon Technology Co., Limited Separation structure for dust cup of vacuum cleaner

Also Published As

Publication number Publication date
CN101416849A (en) 2009-04-29
US7976597B2 (en) 2011-07-12
EP2052659B1 (en) 2013-06-19
EP2052659A3 (en) 2010-08-04
GB2453949A (en) 2009-04-29
EP2052659A2 (en) 2009-04-29
GB0720699D0 (en) 2007-12-05
CN101416849B (en) 2013-12-04
AU2008230035A1 (en) 2009-05-07
GB2453949B (en) 2012-03-28
AU2008230035B2 (en) 2013-05-09

Similar Documents

Publication Publication Date Title
US7976597B2 (en) Cyclonic separation apparatus
US7955406B2 (en) Cyclonic separation apparatus
US7955405B2 (en) Cyclonic separation apparatus
CN100430146C (en) Cyclonic separating apparatus
KR101141109B1 (en) Cyclonic separating apparatus
KR100866354B1 (en) Vacuum cleaner
KR100648960B1 (en) A multi cyclone separating apparatus
EP1059993B1 (en) Cleaning apparatus
US7749292B2 (en) Cyclonic dust collecting apparatus
US9456724B2 (en) Separating apparatus in a vacuum cleaner
US9603498B2 (en) Separating apparatus in a vacuum cleaner
JP2008541816A (en) Dust and dust cyclone separator
JP2007301384A (en) Cyclonic separating apparatus
EP1938732B1 (en) Cyclonic separation apparatus

Legal Events

Date Code Title Description
AS Assignment

Owner name: HOOVER LIMITED, UNITED KINGDOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SMITH, DAVID BENJAMIN, MR.;REEL/FRAME:021836/0762

Effective date: 20081029

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: PETITION RELATED TO MAINTENANCE FEES GRANTED (ORIGINAL EVENT CODE: PMFG); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Free format text: PETITION RELATED TO MAINTENANCE FEES FILED (ORIGINAL EVENT CODE: PMFP); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

REMI Maintenance fee reminder mailed
PRDP Patent reinstated due to the acceptance of a late maintenance fee

Effective date: 20150731

FPAY Fee payment

Year of fee payment: 4

SULP Surcharge for late payment
MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20230712